ON Motorcycle

2012 KTM 450 SX-F with the high-quality chassis on the KTM 450 SX-F allows advanced riders to convert the brutal power of the innovative DOHC four-stroke engine into controllable traction, even on the toughest MX tracks. With an even more robust clutch, the 450 SX-F is still a real ace in the motocross (450 class). New for 2012 450 SX-F model is now equipped with Dunlop MX51 tires.


2012 KTM 450SX-F Specifications And Technical Details
MSRP Price: See KTM dealer in your country for pricing.

Engine
Engine type Single cylinder, 4-stroke
Displacement 449.3 ccm
Bore/stroke 97/60.8 mm
Compression ratio 12.5:1
Starter/battery Electric starter / 12V 3Ah
Transmission 5 gears
Carburetor Keihin FCR-MX 41
Control 4 V / DOHC with finger followers
Lubrication Pressure lubrication with 3 oil pumps
Gear ratios 16:34 19:31 20:26 23:25 26:24 -
Primary ratio 29:74
Final drive 14:52
Cooling Liquid cooling
Clutch Wet multi-disc clutch, Magura hydraulics
Ignition Kokusan


Chassis
Frame Central double-cradle-type 25CrMo4
Subframe Aluminium
Handlebar Renthal, Aluminium Ø 28/22 mm
Front suspension WP-USD, Closed Cartridge, Ø 48 mm
Rear suspension WP-Monoshock with linkage
Suspension travel front/rear 300/330 mm
Front/rear brakes Disc brake 260/220 mm
Front/rear rims 1.60 x 21"; 2.15 x 19" Excel
Front/rear tires 80/100-21"; 110/90-19"
Chain 5/8 x 1/4"
Silencer Aluminium
Steering head angle 63.5°
Wheel base 1,495 ± 10 mm
Ground clearance 371 mm
Seat height 992 mm
Tank capacity, approx. 7.5 l
Weight, without fuel, approx. 106.9 kg

The KTM 250 SX-F has been the dominant force in the World Championship MX2 class for years, thats why the new 2011 KTM 250 SX-F is being launched with a completely reworked chassis, new bodywork and the next stage in engine development with fuel injection.

KTM Press Release

Perfectly Positioned The KTM Offroad Model Year 2011


KTM’s Mattighofen factory in Austria has invested a huge amount of effort in developing the latest Offroad motorcycles for the 2010 season with the clear aim of improving the advantage on loose ground even more. Star of the KTM model range is the revolutionary MX1 innovation, the 350 SX-F.

The current motorsport season is well underway and the KTM factory riders have already claimed a slew of podiums on the latest “Made in Austria“ Offroaders. Now the sports brand from Austria presents the line-up of brand new motorcycles for the Model Year 2011.

With three high quality and competitive Minicycle variants for the youngest offroad enthusiasts, a total of six uncompromising Motocross motorcycles especially designed for winning races as well as eight versions of Sport Enduros, the Austrian manufacturer presents the perfect line-up for the coming season. In doing so, KTM once again underlines its leading role in the world of Offroad sports activity.

The huge amount of depth of development in the new Offroad model range extends all the way from the 50 cc two-stroke (50 SX) right up to the powerful displacement of the Enduro 530 EXC-R. In between there is a whole range of tailor-made sports machines for every type of offroad riding and for every rider profile, all absolutely true to the KTM “Ready to Race” philosophy. KTM has just the right machine, regardless of whether it’s for the ambitious hobby rider or the ruling world champion.

As well as the huge development effort that the KTM technicians have applied to the entire model range, these new motorcycles still include some very special innovations. This especially applies to the 350 SX-F, which was first exhibited last autumn. This, the first ever 350 cc bike deployed in the MX1 World Championship, has already been mastered by factory riders Antonio “Tony” Cairoli and his Red Bull KTM teammate Rui Goncalves. Cairoli not only won the premiere race for the 350 machine; after his GP victories, he is also leading the championship standings.

In addition to the unique engine concept, the MX lineup for the 2011 also includes a newly developed frame and chassis components.

The Enduro models, which have been similarly decorated with world championship titles all also profit from the massive amount of experience gathered by not less than 176 World Championship titles. This can be seen both in the feather light two-stroke versions as well as the highly modern and performance powerful four-stroke models. With significant improvements in a while range of areas as well as the extensive series equipment, these machines are prepared in the best possible way for the new racing season.

The new Motocross, Enduro and Minicycle models will be delivered to KTM dealers from June of this year.


2011 KTM 250 SX-F - USA Specifications
MSRP: $TBA USD

Engine

Engine type Single cylinder, 4-stroke
Displacement 248.6 cc
Bore x stroke 76 x 54.8 mm (2.99 x 2.16")
Compression ratio 13.2:1
Starter Kickstarter
Transmission 6 gears
Carburetor Keihin EFI, throttle body 42 mm
Control 4 V/DOHC with finger followers
Lubrication Pressure lubrication with 2 oil pumps
Engine lubrication Motorex, SAE 10W50
Primary drive 22:68
Final drive 13:48
Cooling Liquid cooled
Clutch Wet multi-disc clutch, operated hydraulically
Ignition Keihin EMS


Chassis

Frame Central double-cradle-type 25CrMo4
Subframe Aluminium
Handlebar Renthal, Aluminium Ø 28/22 mm (1.10/0.87")
Front suspension WP USD Ø 48 mm (1.89")
Rear suspension WP-Monoshock with linkage
Suspension travel front/rear 300/330 mm
Brakes, front/rear Disc brakes 260/220 mm (10.24/8.66")
Rims, front/rear 1.60 x 21"; 2.15 x 19" Excel
Tires, front/rear 80/100-21"; 100/90-19"
Chain 5/8 x 1/4"
Main silencer Aluminium
Steering head angle 63.5°
Wheel base 1495±10 mm
Ground clearance (unloaded) 375 mm
Seat height 992 mm
Tank capacity approx. 7.5 liters
Weight (no fuel) approx. 99.9 kg


2011 KTM 250 SX-F - Canada Specifications
MSRP: $TBA CDN

Engine

Engine type Single cylinder, 4-stroke
Displacement 248.6 cc
Bore x stroke 76 x 54.8 mm (2.99 x 2.16")
Compression ratio 13.2:1
Starter Kickstarter
Transmission 6 gears
Carburetor Keihin EFI, throttle body 42 mm
Control 4 V/DOHC with finger followers
Lubrication Pressure lubrication with 2 oil pumps
Engine lubrication Motorex, SAE 10W50
Primary drive 22:68
Final drive 13:48
Cooling Liquid cooled
Clutch Wet multi-disc clutch, operated hydraulically
Ignition Keihin EMS


Chassis

Frame Central double-cradle-type 25CrMo4
Subframe Aluminium
Handlebar Renthal, Aluminium Ø 28/22 mm (1.10/0.87")
Front suspension WP USD Ø 48 mm (1.89")
Rear suspension WP-Monoshock with linkage
Suspension travel front/rear 300/330 mm
Brakes, front/rear Disc brakes 260/220 mm (10.24/8.66")
Rims, front/rear 1.60 x 21"; 2.15 x 19" Excel
Tires, front/rear 80/100-21"; 100/90-19"
Chain 5/8 x 1/4"
Main silencer Aluminium
Steering head angle 63.5°
Wheel base 1495±10 mm
Ground clearance (unloaded) 375 mm
Seat height 992 mm
Tank capacity approx. 7.5 liters
Weight (no fuel) approx. 99.9 kg


2011 KTM 250 SX-F - International Specifications

Engine

Engine type Single cylinder, 4-stroke
Displacement 248.6 cc
Bore x stroke 76 x 54.8 mm (2.99 x 2.16")
Compression ratio 13.2:1
Starter Kickstarter
Transmission 6 gears
Carburetor Keihin EFI, throttle body 42 mm
Control 4 V/DOHC with finger followers
Lubrication Pressure lubrication with 2 oil pumps
Engine lubrication Motorex, SAE 10W50
Primary drive 22:68
Final drive 13:48
Cooling Liquid cooled
Clutch Wet multi-disc clutch, operated hydraulically
Ignition Keihin EMS


Chassis

Frame Central double-cradle-type 25CrMo4
Subframe Aluminium
Handlebar Renthal, Aluminium Ø 28/22 mm (1.10/0.87")
Front suspension WP USD Ø 48 mm (1.89")
Rear suspension WP-Monoshock with linkage
Suspension travel front/rear 300/330 mm
Brakes, front/rear Disc brakes 260/220 mm (10.24/8.66")
Rims, front/rear 1.60 x 21"; 2.15 x 19" Excel
Tires, front/rear 80/100-21"; 100/90-19"
Chain 5/8 x 1/4"
Main silencer Aluminium
Steering head angle 63.5°
Wheel base 1495±10 mm
Ground clearance (unloaded) 375 mm
Seat height 992 mm
Tank capacity approx. 7.5 liters
Weight (no fuel) approx. 99.9 kg
Source: http://www.totalmotorcycle.com/photos/2011models/2011-KTM-250SXF.htm